Highlight < 0.9.3 - Authenticated (Admin+) Stored Cross-Site Scripting

2021-08-06 00:00

xiahao

Strategic Overview

Status

Patched in 0.9.3

Affected PluginHighlight Sitewide Notice, Text, Button Menu

Affected Version< 0.9.3

CVSS5.5Medium

CVECVE-2021-24591

View all Highlight Sitewide Notice, Text, Button Menu vulnerabilities

Vulnerability Overview

The Highlight WordPress plugin before 0.9.3 does not sanitise its CustomCSS setting, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Technical Analysis

REMEDIATION: Update to version 0.9.3, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24591 https://www.wordfence.com/threat-intel/vulnerabilities/id/436cd742-c271-4eb7-96a3-cd6af046d26f

CVSS Vector

5.5

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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